Ultrasonic Pest Repeller 6 Pack, 2021 Upgraded Electronic Wall Plug in Mosquito Repellent Safe Indoor Ultrasonic Reject for Mosquito, Mice, Cockroaches,Ant,Spider (Model A)

We purchased a home in the woods, and noticed the seller had placed one in every room. All the pre move contractors commented that they weren’t seeing ANY bugs! After 3 months, I have yet to see a spider, and if I see anything, it’s dead! Don’t know how they work, but they DO!!

THey don't work. the mouse walked right in front of it.I returned for a refund.

Like everything. Price, quality, working condition, does what it says. Been had mine for years.

I think these work for mice, but I don't think this one is to effective for spiders.

hope they work

I haven't had my Ultrasonic Pest Repeller long enough to know if it's working yet, so I'm looking forward to seeing how it actualy works. I've read good reviews so I'm hopeful

I put two of these in the Breezeway, have caught 8 mice to date, they do not work!Save your money, instead buy mouse traps, mouse traps work!

This works good on some insects. Of course started seeing less insects when it started to get colder. Now haven't seen any insects. Could be from cold or this pest repellant. I do know that this pest repellent doesn't work on mice. I've set up a humane mouse trap between 2 of these that are plugged in and shows that they're working. Caught 2 mice in the same day. Caught the first one, let it go a few miles down the road in a field. Set the trap up again. 10 minutes later, caught another mouse. Let it go in a different field the next day. So for the mice to get to the trap, they had to get within 24 inches of the pest repellants.